lar polar groups in molecules, in establishing the The chemistry of organophosphorus compounds structure of molecules; it is widely used in confor- continues its rapid development. There appear re- mational analysis and in studies of intermolecular ports on the synthesis of new series and even classes of organophosphorus compounds, such as deriva interactions. At present, it seems rather difficult tives of two- and single-coordinated phosphorus, to find any pUblication on new syntheses of organo- as evidenced by recent publications (L. D. Quin, phosphorus compounds without reference to their The Heterocyclic Chemistry of Phosphorus Systems infrared spectra. Undoubtedly, IR spectra will con- Based on the Phosphorus-Carbon Bond, Wiley and tinue to be successfully used in research into the Sons, Inc. , New York, 1981, 434 pp.; A. D. F. Toy, properties of organophosphorus compounds. Phosphorus Chemistry in Everyday Living, Amer. In this context, the task of collecting and classi- Chem. Soc. , Washington, 1976, 238 pp.; Rodney fying such data remains to be challenging.
It should Keat," Phosphorus (JIl)-Nitrogen Ring Compounds:' be mentioned that not infrequently only some in: Topics in Current Chemistry, Springer-Verlag, information contained in infrared spectra is pub- Berlin, 1982, Vol. 102, pp. 89-116; Martin Grayson lished; only several frequencies are given in support and Edward J. Griffith (eds. ), Topics in Phosphorus of the assigned structure, the full infrared spectra Chemistry: in 11 vols. , Wiley-Interscience, New remaining only in laboratory records.